Automatic brake for phonographs



June 22 1926. 1,589,343

J ANDRASSY- 7 AUTOMATIC BRAKE FOR PHONOGRAPHS Original Filed Jan. 2. 1924 (El Patented June 22,1926.

UNITED STATES JOSEPH ANDRAS SY, OF CLEVELAND, OHIO.

AUTOMATIC BRAKE FOR PHONOGRAPHS.

Application filed. January 2, 1924, Serial No. 683,960.

This invention relates to automatic brakes for talking machines, whereby the rotation of the turn table is automatically stopped when the record is completed.

The object of the invention is to provlde improved brake means of simple and inexpensive construction and capable of convenient application to sound reproducmg machines now in general use, and which is controlled in a simple manner to take care of records of different sizes.

More particularly, the present invention consists in the provision of two separate but similar brakes for stopping the record supporting turn table at the expiration of different periods of rotation, one of said brakes being for use with ten inch and the other for twelve inch records. Simple control means is provided for rendering either one of said brakes effective, according to the size of the record to be played.

Further objects of the invention are in part obvious and in part will appear more in detail hereinafter. a

In the drawing, which represents one suitable embodiment of my invention, Fig. 1 is a side elevation of the improved brake attached to the top portion of a phonograph cabinet; Fig. 2 is a sectional plan view of the line 22, Fig. 1; Fig. 3 is a detail sectional view of the actuating means for the brakes, taken on the line 33, Fig. 4; and Fig. 4 is a plan view of the two brakes and the controlling means therefor.

Referring to the drawing, 1 represents the removable top portion of a phonograph cabinet, to the lower surface of which is suitably secured a spring motor 2 connected to rotate the vertically disposed spindle or shaft 3 by suitable gearing 3 controlled by the usual speed governor (not shown). Said shaft extends through the cabinet top 1 and carries the record supporting turn table 4.

5 and 6 represent two brake lever members provided with finger pieces 5*, 6 brake 5 being designed for use in connection with the playing of ten inch records while brake 6 is for twelve inch records. Said brake levers are mounted for swinging movement toward and from the flange of turn table 4 in slots 7 8 in the cabinet top 1. The lower end of brake 5 is pivoted, as at 9, to a bracket 10, while the lower end of brake 6 is pivoted, as at 11, to a bracket 10, said brackets being secured to and depending from the cabinet top 1.

Renewed May 10, 1926.

The controlling mechanism for brake 5 in cludes a latch 12 pivoted, as at 13, to the bracket 10 and extending through a barrel member 14 on bracket 10 and in which is a. spring 15 tending to move the latch in a counter-clockwise direction about its pivot 13 to latching position, Fig. 3. The upper end of said latch normally engages a tooth or projection 16 on the lower end of brake lever 5 and holds said lever under the impelling tension of a spring 17, connected to lever 5 and to an car on bracket 10. The lower end of the latch 12 is normally engaged by the upperend of a trip lever 18, which is pivoted intermediate its ends, as at 19, to a bracket 20 mounted on a horizontally disposed platform 21, secured by posts 22 to the cabinet top 1. The upper end portion of the trip lever 18 is connected by a spring 23 to bracket 20, said spring therefore urging the trip end of the lever toward latch lever 12.

The brake 6 is provided with similar actuating mechanism, the operation of which is the same as that for brake 5. That is to say,

brake lever 6 is provided with a spring 24 and a tooth 25 normally engaged by the upper end of a latch 26, pivoted at 27 to the depending bracket 10*. Said latch extends through a springcontaining barrel member 28, its lower end being normally engaged by the, upper end of a trip lever 29 pivoted at 30 to the bracket 31 on platform 21.

The trip levers 18 and 29 are turned in a clockwise direction to cause the actuation of brakes 5 and 6 by two pins 32 and 33, which 'are respectively carried by gears 34, 35

rotatable on a shaft 36 mounted insuitable supports 37 on platform 21. The two gears 34, 35 are driven at different speeds and preferably both are driven by the motor 2 and therefore in timed relation with the rotation of the record operating spindle 3. For this purpose the platform 21 carries a shaft 38 provided with a gear'39 driven by the same gear 40 which operates the spindle 3, said shaft being connected by bevel gearing 41 to operate a shaft 42, provided with a gear 43 meshing with a gear 44 on shaft 45, said shaft being provided with a gear 46 meshing with a gear 47 on a shaft 48 carrying two reducing gears 48, 48 fixed to rotate with said shaft, one of said gears, 48*, driving the gear 35, while the gear 48 drives the gear 34.

In operation, when the record is rotated, gears 34 and 35 rotate in the direction of the arrow A, Fig. 1. When the motor 2 is fully wound up both of the pins 32, 33 stand at the position of pin 33 of Fig. 1, having just passed the levers 18, 29. Gear 48 is smaller than gear 48 so that gear 35 rotates at a slower rate of speed than gear 34 and its pin 33 is therefore utilized for stopping the rotation of the table when twelve inch records are used, while pin 32 is utilized for stopping the table when then ten inch records are used. Assuming the motor to be fully wound and a ten inch record to be played, the brake 5 is moved to brake release position and cocked, as shown in Fig. 3. At/the same time brake 6 is moved to like position and is locked in inoperative or inefi'ective condition by engaging therewith a latch 50 pivoted at 51 on a stiff joint 'on the frame. The table is then started and when the ten inch record has been finished pin 32 engages lever 18, pulling its hammer end awa from lever 12 and finally releasing lever 18 so that the spring 23 causes its hammer end to impart a blow to latch 12 and release brake 5 for movement by its spring 17 into braking engagement with the flange of the table, therefore stopping the same. The parts are now in position for resetting the brake 5 and playing another ten inch record without change.

If it is desired to play a twelve inch record, the latch 50 is turned to the full line position Fig. 4 to render brake 6 effective and brake 5 inefiective and brake 6 is set or cooked and is released by the pin 33 in the same manner before described.

When brake 5 is turned to stop the table after playing a ten inch record and it is desired then to play a twelve inch record or vice versa, the proper brake for the new record to be played is made effective, is cooked and the table is allowed to rotate idly until said brake is applied, whereupon the record can be applied to the table and the proper brake therefore becomes operative to stop the table when the record is finished. For example, one not knowing to what extent the motor is wound or what are the positions of pins 32 or 33 and desiring to play a twelve inch record merely cooks the brake 6 and allows the table to rotate idly until brake 6 becomes effective, when a twelve inch record can be played and properly stopped at its conclusion.

The mechanism is simple and requires no delicate setting for individual records, but the gears are so proportioned that pin 32 will take care of the longest ten inch record and pin 33 the longest twelve inch record.

What I claim is:

1. A phonograph stop mechanism, comprising a record supporting member, a motor for rotating said member, a plurality of brakes for stopping said member at the expiration of different periods of rotation, actuating means for each of said brakes, means operated by said motor for controlling said actuating means, and means under the control of the operator for rendering either of said brakes effective.

2. A phonograph stop mechanism, comprising a record supporting member, a motor therefor, two brakes for said member, a latch for each brake, and means actuated by said motor for controlling both of said latches.

3. A phonograph stop mechanism, comprising a record supporting member, a motor therefor, two brakes for said member, a latch for each brake, means actuated by said motor for controlling both of said latches, and operator operated means for rendering either brake ineffective.

4. A phonograph stop mechanism, comprising a record supporting member, a motor therefor, braking means for said member, and two trains of gearing actuated by said motor for controlling said brake means.

5-. A phonograph stop mechanism, comprising a record supporting member, a motor therefor, braking means for said member, two trains of gearing actuated by said motor for controlling said brake means, and means for rendering either of said trains of gearing effective and the other ineffective.

6. A phonograph stop mechanism, comprising a record supporting member, a motor therefor, two brakes for said member, and means actuated by said motor for controlling both of said brakes.

In testimony whereof I hereby affix my signature.

JOSEPH ANDRASSY. 

